org.apache.openjpa.kernel.exps
Class Size
java.lang.Object
org.apache.openjpa.kernel.exps.Val
org.apache.openjpa.kernel.exps.UnaryMathVal
org.apache.openjpa.kernel.exps.Size
- All Implemented Interfaces:
- Serializable, Value
class Size
- extends UnaryMathVal
Returns the count of a collection.
- Author:
- Marc Prud'hommeaux
Method Summary |
protected Class |
getType(Class c)
Return the type of this value based on the numeric type being operated
on. |
protected Object |
operate(Object o,
Class c)
Return the result of this mathematical operation on the given value. |
Methods inherited from class org.apache.openjpa.kernel.exps.Val |
eval, evaluate, evaluate, getAlias, getMetaData, getName, getPath, getSelectAs, isAggregate, isVariable, isXPath, setAlias, setMetaData |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Size
public Size(Val val)
getType
protected Class getType(Class c)
- Description copied from class:
UnaryMathVal
- Return the type of this value based on the numeric type being operated
on.
- Specified by:
getType
in class UnaryMathVal
operate
protected Object operate(Object o,
Class c)
- Description copied from class:
UnaryMathVal
- Return the result of this mathematical operation on the given value.
- Specified by:
operate
in class UnaryMathVal
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